Uranium flush Share definition Flag When one simply forgets to use contraceptive and tries to piss out the semen before she gets impregnated. ‘Bust’s his load’ “Oh fuck, I forgot to take the pill. I’ll be right back after my Uranium flush” Uranium flush by Hammy554 March 1, 2019 0 0 Get merch Get the Uranium flush mug. Buy Now — $32.95 See more merch